Does anyone know what this ppm is and is it safe for fish to get back in tank

[Jordan1050064]

If you do a 50% WC your nitrates will be at 40 ppm to 80 ppm, so that’s still too much.

I’m new at saltwater so I don’t know what the best solution is. If it was freshwater, I would do as close to 100% WC as possible.

Let’s wait for an experienced hobbyist.

This looks like 40 ppm so if I did 50 WC I think it will knock it down alottt

 

[Screwgunner]

How much rock do you have. You need about 100 pounds for a 120 gallon. With good flow rock will bring nitrates down.

 

[Jordan1050064]

How much rock do you have. You need about 100 pounds for a 120 gallon. With good flow rock will bring nitrates down.

Rn now only about 65 pounds for right now

 

[Screwgunner]

I have a 125 , I cycled my rock in a 32 gallon trash can ,put rock in it mixed water in 5 gallon buckets filled it up over the rock put a heater and powerhead . Then a whole shrimp. For 4 months . Put new water in my tank about half full did my rock scape . 0 everything.

 

[MnFish1]

How much rock do you have. You need about 100 pounds for a 120 gallon. With good flow rock will bring nitrates down.

Curious - how would this work?

 

[dedragon]

guessing they are talking about algae and bacterial denitrification, i think they mean after the very large water changes necessary to get the levels in order.
But yeah they need more rock or bio media

 

[MnFish1]

guessing they are talking about algae and bacterial denitrification, i think they mean after the very large water changes necessary to get the levels in order.
But yeah they need more rock or bio media

I cant tell if you were referring to my post or not - my question was - how does increased flow and more rock remove nitrates? It is my understanding that increasing rock may help with ammonia/nitrite but does little for 'nitrate'

 

[dedragon]

Nitrate removal by denitrification, i think it is the concept behind nitrate reactors and carbon dosing, bacteria eats away at the nitrate and phosphate
Not gonna be effective in this persons tank until stability comes and bacteria has colonized.

 

[MnFish1]

Nitrate removal by denitrification, i think it is the concept behind nitrate reactors and carbon dosing, bacteria eats away at the nitrate and phosphate
Not gonna be effective in this persons tank until stability comes and bacteria has colonized.

I know - my point - adding more rock will not necessarily reduce nitrate much. https://reefs.com/2017/12/17/new-study-live-rock-doesnt-really-denitrify/

 

[dedragon]

yep, agreed there. I dont think it will replace water changes, but still is an active process occurring in the tank

 

[anthonygf]

Get a bunch of macro algae in your tank, it will suck up your nitrates.